Ernest r



(Model.

E. 3.3333031. TYPE WRITING MACHINE Nd. 360,133. Patented Mar. 29., 1337.

n m m I ilNiTEn STATES PATENT Erica.

ERNEST R. BARRON, OF NEIV YORK, N. Y., ASSIGNOR TO JAMES DENSMORE,

OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 360,133, dated Itiarch 29, 1887.

Application filed December 24, 15 81. Serial No. 48,698. (ModeL) T (tZl whmn it may concern:

Be it known that I, ERNEST R. BARRON,

of the city, county, and State of New York, have invented Improvements in Type-Writing Machines, of which the following is a specification.

The invention is illustrated by the accompanying drawings, which may be described as follows:

In the drawings, Figure 1 represents a perspective view of the carriage and carriage attachments of a type-writing machine which embodies the invention; Fig. 2, a perspective view of the pressureroller, pressure-springs,

and pressure-bed or pressure-plate detached;

Fig. 3, a view of the under side of the carriage and carriage attachments; Fig. 4, a sectional view thereof, and Fig. 5 a view of the platen-cover.

In the drawings, also, A represents the carriage of a type writing machine which embodies the invention; B, the traveling wheels of the carriage A; O, the cylindrical platen, provided with journals at the ends, across over the middle, in hearings on the carriage A; D, the linespace ratchet-wheel on the end of the platen O; E, the holding-ratchet attached to the carriage A and extended into the notches between the teeth of the ratchetwheel D; F, the propelling ratchet or pallet on a lever on the carriage A, adapted to vibrate and work in the notches between the teeth of the ratchet-wheel D; G, the papertable on the carriage A, across behind the 5 platen G; H, the paper-guide on the front of the carriage A, and extended to and around the middle of the front of the platen O; I, the letter-space rack attached to the rear of the carriage A; J, a long spring on the front rail and near each end of the carriage A, extended toward the rear,under,and curved and adapted to press up against the platen O; K, a journal-bearing in the hind end of each pressurespring J; L, a roller across,between,the press 5 uresprings' J behind, and adapted to press against the platen G; M, a journal on each end of the pressureroller L, in the contiguous pressure-spring bearing; N, a bed or plate without the aid of band-wheels and carryingbands.

The platen O is within the cover O,of soft paper, leather, felt, cloth, caoutchouc, or the like, of a regular even surface, adapted to the impact of the types and to adhere or cleave to the paper or substance to be written on, pressed against it by friction, while the pressure-springs J and pressurebed or press ure-plate N are of polished steel, brass, or the like,and practically frictionless. Besides, the paper or substance written on is adapted to touch and press against a large part of the surface of the platen O, while the surfaces of the pressure-springs J and pressure-bed or pressure-plate N are narrow and limited, so that the paper or substance written on will slide readily against the pressure-springs and pressurebed or pressure-plate, but will not 7 slide against the platen,eXcept by great special force applied for the purpose. In addition, the pressure-roller L is adapted to press the paper or substance written on against the platen G, and thus to prevent it from sliding against the platen and to make it slide against the pressure-springs or against the pressure bed or pressure-plate. It isa simple, efficient, and cheap device for the purpose. Therefore, VVha-t I claim is as follows:

1. In a type-writing machine, the combination of a cylindrical platen with a spring adapted to press against the platen,or against the substance to be writ-ten on, between the spring and platen.

2. In a typewriting machine, the combination of a cylindrical platen with a pressureroller and a spring'adapted to press against the platen, or against the substance 'to be written on, between the spring and platen.

3. In a type-writing machine, the combination of a cylindrical platen witha spring and to press against the platen, or against the bed or plate adapted topress against theplaten, substance to be Written on, between the bed I or against the substance to be written on, beand platen.

tween the bed and platen. 5 4. In a type-writing machine, the combina- \Vitnesses:

tion of a cylindrical platen with a spring HULBERT PEOK, and pressure-roller and a berl or plate adapted HARRY W. OOLLOM.

ERNEST R. BARRON. 

